I'm sure someone here can solve this simple problem. I'm happy with DC circuits but 240vac makes a coward of me, and when frightened sometimes I don't think straight.
The electric baseboard heater in Gail's studio won't turn off, so I pulled the circuit breaker and took the thermostat off the wall. The original Mears unit (at least 25 years old) is out of production so I ordered a modern two-pole Honeywell CT410B.
The Mears has three wires: Red for line, black for load and white for neutral, which confuses be because I thought you get a neutral wire only with 110v circuits. The Honeywell has four: L1 and L2 for line (red), T1 and T2 for load (black). I assume the line wire (black) from the box should go to L1 and/or L2.
- Should I twist the line wire together with both L1 and L2 (red), or just one of them?
Should I twist the load wire (black) together with both T1 and T2 (black) or just one?
What do I do with the remaining white neutral wire from the box?
Any help?